Graham. wrote:
"The Natural Philosopher" wrote in message
...
Graham. wrote:
"Francisco José Cañizares Santofimia" wrote in
message
...
On 24 sep, 11:10, "Graham." wrote:
[x-posted to uk.tech.digital-tv where I know it will be of interest]


I wonder what the correction was. Wrong warp factor I guess!
I wonder it too, so I hope anyone has it an can send the scan to
or

Thank you very much for your reply.

Francisco
Back in the '80s people would go to all sorts of lengths
to construct a dish, as the little that was available to the
public was expensive.
I knew someone who was a sound engineer for the BBC,
he borrowed a microwave radio-link dish to use
as a template or former for the one he moulded with
fibre-glass.
well that was in essence no different to how they were made
'professionally'

Large plaster moulds from CNC cut formers, lovingly smoothed, and chicken
wire and fiberglass applied over..might have had a coat of conducting
paint or something or a metal loaded gel coat..


But a wooden dish?
I found this
http://www.vetrun.net/forums/showthread.php?t=481
but I am taking it with more than a pinch of salt.

Sure. Stick foil on it and its a pretty fair mirror to Ghz frequencies,